ION Announces Third Quarter 2009 Earnings Release and Conference Call Schedule

• Press Release
• Source: ION Geophysical Corporation
• On 7:00 am EDT, Wednesday October 28, 2009

HOUSTON, Oct. 28 /PRNewswire-FirstCall/ -- ION Geophysical Corporation (NYSE: IO - News) announced today that it will release third quarter 2009 financial results on Wednesday, November 4, 2009 after the market closes. In conjunction with the release, ION has scheduled a conference call, which will be broadcast live over the Internet, for Thursday, November 5 at 10:00 a.m. Eastern Time (9:00 a.m. Central).

    What:   ION Third Quarter 2009 Earnings Conference Call

    When:   Thursday, November 5, 2009 - 10:00 a.m. Eastern Time

    How:    Live via phone - By dialing (480) 629-9692 and asking for the
            ION call a few minutes prior to the start time.
            Live over the Internet - by logging on to the web at the address
            below.

    Where:  http://www.iongeo.com.  The webcast can be accessed from
            the home page.

For those who cannot listen to the live call, a telephonic replay will be available through November 19, 2009, and may be accessed by calling (303) 590-3030 using pass code 4175137#. Also, an archive of the webcast will be available shortly after the call on the company's website at www.iongeo.com for approximately 12 months.

About ION

ION is a leading provider of geophysical technology, services, and solutions for the global oil & gas industry. ION's offerings allow E&P operators to obtain higher resolution images of the subsurface to reduce the risk of exploration and reservoir development, and enable seismic contractors to acquire geophysical data more efficiently. Additional information about ION is available at www.iongeo.com.

The information included herein contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results may vary fundamentally from those described in these forward-looking statements. All forward-looking statements reflect numerous assumptions and involve a number of risks and uncertainties. These risks and uncertainties include risk factors that are disclosed by ION from time to time in its filings with the Securities and Exchange Commission.

    Contacts:  R. Brian Hanson
               Chief Financial Officer
               ION Geophysical
               (281) 879-3672

               Jack Lascar
               DRG&E (713) 529-6600

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